src/Lucene.Net.TestFramework/Index/AssertingDirectoryReader.cs

namespace Lucene.Net.Index
{
    /*
     * Licensed to the Apache Software Foundation (ASF) under one or more
     * contributor license agreements.  See the NOTICE file distributed with
     * this work for additional information regarding copyright ownership.
     * The ASF licenses this file to You under the Apache License, Version 2.0
     * (the "License"); you may not use this file except in compliance with
     * the License.  You may obtain a copy of the License at
     *
     *     http://www.apache.org/licenses/LICENSE-2.0
     *
     * Unless required by applicable law or agreed to in writing, software
     * distributed under the License is distributed on an "AS IS" BASIS,
     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     * See the License for the specific language governing permissions and
     * limitations under the License.
     */

    /// <summary>
    /// A <see cref="DirectoryReader"/> that wraps all its subreaders with
    /// <see cref="AssertingAtomicReader"/>
    /// </summary>
    public class AssertingDirectoryReader : FilterDirectoryReader
    {
        internal class AssertingSubReaderWrapper : SubReaderWrapper
        {
            public override AtomicReader Wrap(AtomicReader reader)
                => new AssertingAtomicReader(reader);
        }

        public AssertingDirectoryReader(DirectoryReader @in)
            : base(@in, new AssertingSubReaderWrapper())
        { }

        protected override DirectoryReader DoWrapDirectoryReader(DirectoryReader @in)
            => new AssertingDirectoryReader(@in);

        public override object CoreCacheKey
            => m_input.CoreCacheKey;

        public override object CombinedCoreAndDeletesKey
            => m_input.CombinedCoreAndDeletesKey;
    }
}